The article presents a conceptual model for the national intellectual system aiming the safety provision of the children in Internet environment. The structucal components and work principles of the proposed model are explained. This model employs web-analytics, data sanitization (cleaning) technology, expert systems, text mining, clustering and classification methods, content filtering and etc. to protect children from harmful information in virtual environment. By using data sanitization methods, the study presents a conceptual model for obtaining more important, useful and age-corresponding information from internet resources and preventing harmful information.